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ffmpeg/libavcodec/i386/dsputil_h264_template_mmx.c

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/*
* Copyright (c) 2005 Zoltan Hidvegi <hzoli -a- hzoli -d- com>,
* Loren Merritt
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* MMX optimized version of (put|avg)_h264_chroma_mc8.
* H264_CHROMA_MC8_TMPL must be defined to the desired function name
* H264_CHROMA_OP must be defined to empty for put and pavgb/pavgusb for avg
* H264_CHROMA_MC8_MV0 must be defined to a (put|avg)_pixels8 function
*/
static void H264_CHROMA_MC8_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
{
DECLARE_ALIGNED_8(uint64_t, AA);
DECLARE_ALIGNED_8(uint64_t, DD);
int i;
if(y==0 && x==0) {
/* no filter needed */
H264_CHROMA_MC8_MV0(dst, src, stride, h);
return;
}
assert(x<8 && y<8 && x>=0 && y>=0);
if(y==0)
{
/* horizontal filter only */
asm volatile("movd %0, %%mm5\n\t"
"punpcklwd %%mm5, %%mm5\n\t"
"punpckldq %%mm5, %%mm5\n\t" /* mm5 = B = x */
"movq %1, %%mm4\n\t"
"pxor %%mm7, %%mm7\n\t"
"psubw %%mm5, %%mm4\n\t" /* mm4 = A = 8-x */
: : "rm" (x), "m" (ff_pw_8));
for(i=0; i<h; i++) {
asm volatile(
/* mm0 = src[0..7], mm1 = src[1..8] */
"movq %0, %%mm0\n\t"
"movq %1, %%mm1\n\t"
: : "m" (src[0]), "m" (src[1]));
asm volatile(
/* [mm2,mm3] = A * src[0..7] */
"movq %%mm0, %%mm2\n\t"
"punpcklbw %%mm7, %%mm2\n\t"
"pmullw %%mm4, %%mm2\n\t"
"movq %%mm0, %%mm3\n\t"
"punpckhbw %%mm7, %%mm3\n\t"
"pmullw %%mm4, %%mm3\n\t"
/* [mm2,mm3] += B * src[1..8] */
"movq %%mm1, %%mm0\n\t"
"punpcklbw %%mm7, %%mm0\n\t"
"pmullw %%mm5, %%mm0\n\t"
"punpckhbw %%mm7, %%mm1\n\t"
"pmullw %%mm5, %%mm1\n\t"
"paddw %%mm0, %%mm2\n\t"
"paddw %%mm1, %%mm3\n\t"
/* dst[0..7] = pack(([mm2,mm3] + 32) >> 6) */
"paddw %1, %%mm2\n\t"
"paddw %1, %%mm3\n\t"
"psrlw $3, %%mm2\n\t"
"psrlw $3, %%mm3\n\t"
"packuswb %%mm3, %%mm2\n\t"
H264_CHROMA_OP(%0, %%mm2)
"movq %%mm2, %0\n\t"
: "=m" (dst[0]) : "m" (ff_pw_4));
src += stride;
dst += stride;
}
return;
}
if(x==0)
{
/* vertical filter only */
asm volatile("movd %0, %%mm6\n\t"
"punpcklwd %%mm6, %%mm6\n\t"
"punpckldq %%mm6, %%mm6\n\t" /* mm6 = C = y */
"movq %1, %%mm4\n\t"
"pxor %%mm7, %%mm7\n\t"
"psubw %%mm6, %%mm4\n\t" /* mm4 = A = 8-y */
: : "rm" (y), "m" (ff_pw_8));
asm volatile(
/* mm0 = src[0..7] */
"movq %0, %%mm0\n\t"
: : "m" (src[0]));
for(i=0; i<h; i++) {
asm volatile(
/* [mm2,mm3] = A * src[0..7] */
"movq %mm0, %mm2\n\t"
"punpcklbw %mm7, %mm2\n\t"
"pmullw %mm4, %mm2\n\t"
"movq %mm0, %mm3\n\t"
"punpckhbw %mm7, %mm3\n\t"
"pmullw %mm4, %mm3\n\t");
src += stride;
asm volatile(
/* mm0 = src[0..7] */
"movq %0, %%mm0\n\t"
: : "m" (src[0]));
asm volatile(
/* [mm2,mm3] += C * src[0..7] */
"movq %mm0, %mm1\n\t"
"punpcklbw %mm7, %mm1\n\t"
"pmullw %mm6, %mm1\n\t"
"paddw %mm1, %mm2\n\t"
"movq %mm0, %mm5\n\t"
"punpckhbw %mm7, %mm5\n\t"
"pmullw %mm6, %mm5\n\t"
"paddw %mm5, %mm3\n\t");
asm volatile(
/* dst[0..7] = pack(([mm2,mm3] + 32) >> 6) */
"paddw %1, %%mm2\n\t"
"paddw %1, %%mm3\n\t"
"psrlw $3, %%mm2\n\t"
"psrlw $3, %%mm3\n\t"
"packuswb %%mm3, %%mm2\n\t"
H264_CHROMA_OP(%0, %%mm2)
"movq %%mm2, %0\n\t"
: "=m" (dst[0]) : "m" (ff_pw_4));
dst += stride;
}
return;
}
/* general case, bilinear */
asm volatile("movd %2, %%mm4\n\t"
"movd %3, %%mm6\n\t"
"punpcklwd %%mm4, %%mm4\n\t"
"punpcklwd %%mm6, %%mm6\n\t"
"punpckldq %%mm4, %%mm4\n\t" /* mm4 = x words */
"punpckldq %%mm6, %%mm6\n\t" /* mm6 = y words */
"movq %%mm4, %%mm5\n\t"
"pmullw %%mm6, %%mm4\n\t" /* mm4 = x * y */
"psllw $3, %%mm5\n\t"
"psllw $3, %%mm6\n\t"
"movq %%mm5, %%mm7\n\t"
"paddw %%mm6, %%mm7\n\t"
"movq %%mm4, %1\n\t" /* DD = x * y */
"psubw %%mm4, %%mm5\n\t" /* mm5 = B = 8x - xy */
"psubw %%mm4, %%mm6\n\t" /* mm6 = C = 8y - xy */
"paddw %4, %%mm4\n\t"
"psubw %%mm7, %%mm4\n\t" /* mm4 = A = xy - (8x+8y) + 64 */
"pxor %%mm7, %%mm7\n\t"
"movq %%mm4, %0\n\t"
: "=m" (AA), "=m" (DD) : "rm" (x), "rm" (y), "m" (ff_pw_64));
asm volatile(
/* mm0 = src[0..7], mm1 = src[1..8] */
"movq %0, %%mm0\n\t"
"movq %1, %%mm1\n\t"
: : "m" (src[0]), "m" (src[1]));
for(i=0; i<h; i++) {
asm volatile(
/* [mm2,mm3] = A * src[0..7] */
"movq %%mm0, %%mm2\n\t"
"punpcklbw %%mm7, %%mm2\n\t"
"pmullw %0, %%mm2\n\t"
"movq %%mm0, %%mm3\n\t"
"punpckhbw %%mm7, %%mm3\n\t"
"pmullw %0, %%mm3\n\t"
/* [mm2,mm3] += B * src[1..8] */
"movq %%mm1, %%mm0\n\t"
"punpcklbw %%mm7, %%mm0\n\t"
"pmullw %%mm5, %%mm0\n\t"
"punpckhbw %%mm7, %%mm1\n\t"
"pmullw %%mm5, %%mm1\n\t"
"paddw %%mm0, %%mm2\n\t"
"paddw %%mm1, %%mm3\n\t"
: : "m" (AA));
src += stride;
asm volatile(
/* mm0 = src[0..7], mm1 = src[1..8] */
"movq %0, %%mm0\n\t"
"movq %1, %%mm1\n\t"
: : "m" (src[0]), "m" (src[1]));
asm volatile(
/* [mm2,mm3] += C * src[0..7] */
"movq %mm0, %mm4\n\t"
"punpcklbw %mm7, %mm4\n\t"
"pmullw %mm6, %mm4\n\t"
"paddw %mm4, %mm2\n\t"
"movq %mm0, %mm4\n\t"
"punpckhbw %mm7, %mm4\n\t"
"pmullw %mm6, %mm4\n\t"
"paddw %mm4, %mm3\n\t");
asm volatile(
/* [mm2,mm3] += D * src[1..8] */
"movq %%mm1, %%mm4\n\t"
"punpcklbw %%mm7, %%mm4\n\t"
"pmullw %0, %%mm4\n\t"
"paddw %%mm4, %%mm2\n\t"
"movq %%mm1, %%mm4\n\t"
"punpckhbw %%mm7, %%mm4\n\t"
"pmullw %0, %%mm4\n\t"
"paddw %%mm4, %%mm3\n\t"
: : "m" (DD));
asm volatile(
/* dst[0..7] = pack(([mm2,mm3] + 32) >> 6) */
"paddw %1, %%mm2\n\t"
"paddw %1, %%mm3\n\t"
"psrlw $6, %%mm2\n\t"
"psrlw $6, %%mm3\n\t"
"packuswb %%mm3, %%mm2\n\t"
H264_CHROMA_OP(%0, %%mm2)
"movq %%mm2, %0\n\t"
: "=m" (dst[0]) : "m" (ff_pw_32));
dst+= stride;
}
}
static void H264_CHROMA_MC4_TMPL(uint8_t *dst/*align 8*/, uint8_t *src/*align 1*/, int stride, int h, int x, int y)
{
DECLARE_ALIGNED_8(uint64_t, AA);
DECLARE_ALIGNED_8(uint64_t, DD);
int i;
/* no special case for mv=(0,0) in 4x*, since it's much less common than in 8x*.
* could still save a few cycles, but maybe not worth the complexity. */
assert(x<8 && y<8 && x>=0 && y>=0);
asm volatile("movd %2, %%mm4\n\t"
"movd %3, %%mm6\n\t"
"punpcklwd %%mm4, %%mm4\n\t"
"punpcklwd %%mm6, %%mm6\n\t"
"punpckldq %%mm4, %%mm4\n\t" /* mm4 = x words */
"punpckldq %%mm6, %%mm6\n\t" /* mm6 = y words */
"movq %%mm4, %%mm5\n\t"
"pmullw %%mm6, %%mm4\n\t" /* mm4 = x * y */
"psllw $3, %%mm5\n\t"
"psllw $3, %%mm6\n\t"
"movq %%mm5, %%mm7\n\t"
"paddw %%mm6, %%mm7\n\t"
"movq %%mm4, %1\n\t" /* DD = x * y */
"psubw %%mm4, %%mm5\n\t" /* mm5 = B = 8x - xy */
"psubw %%mm4, %%mm6\n\t" /* mm6 = C = 8y - xy */
"paddw %4, %%mm4\n\t"
"psubw %%mm7, %%mm4\n\t" /* mm4 = A = xy - (8x+8y) + 64 */
"pxor %%mm7, %%mm7\n\t"
"movq %%mm4, %0\n\t"
: "=m" (AA), "=m" (DD) : "rm" (x), "rm" (y), "m" (ff_pw_64));
asm volatile(
/* mm0 = src[0..3], mm1 = src[1..4] */
"movd %0, %%mm0\n\t"
"movd %1, %%mm1\n\t"
"punpcklbw %%mm7, %%mm0\n\t"
"punpcklbw %%mm7, %%mm1\n\t"
: : "m" (src[0]), "m" (src[1]));
for(i=0; i<h; i++) {
asm volatile(
/* mm2 = A * src[0..3] + B * src[1..4] */
"movq %%mm0, %%mm2\n\t"
"pmullw %0, %%mm2\n\t"
"pmullw %%mm5, %%mm1\n\t"
"paddw %%mm1, %%mm2\n\t"
: : "m" (AA));
src += stride;
asm volatile(
/* mm0 = src[0..3], mm1 = src[1..4] */
"movd %0, %%mm0\n\t"
"movd %1, %%mm1\n\t"
"punpcklbw %%mm7, %%mm0\n\t"
"punpcklbw %%mm7, %%mm1\n\t"
: : "m" (src[0]), "m" (src[1]));
asm volatile(
/* mm2 += C * src[0..3] + D * src[1..4] */
"movq %%mm0, %%mm3\n\t"
"movq %%mm1, %%mm4\n\t"
"pmullw %%mm6, %%mm3\n\t"
"pmullw %0, %%mm4\n\t"
"paddw %%mm3, %%mm2\n\t"
"paddw %%mm4, %%mm2\n\t"
: : "m" (DD));
asm volatile(
/* dst[0..3] = pack((mm2 + 32) >> 6) */
"paddw %1, %%mm2\n\t"
"psrlw $6, %%mm2\n\t"
"packuswb %%mm7, %%mm2\n\t"
H264_CHROMA_OP4(%0, %%mm2, %%mm3)
"movd %%mm2, %0\n\t"
: "=m" (dst[0]) : "m" (ff_pw_32));
dst += stride;
}
}
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